Two-stage extruders are mainly used for mixing and shearing thermoplastics. The two-stage structure is suitable for processing various materials, such as PVC and XLPE cable materials, soft PVC medical materials, hard PVC and PE low-smoke halogen-free fuel-resistant materials, lwm.
With over 18 years of expertise in plastic extrusion technology and direct collaboration with 200+ global manufacturers (including automotive, cable, and medical device producers), Kuv tau pom qhov kev hloov pauv ntawm ob theem extruders ntawm kev sib xyaw ua haujlwm thiab cov khoom zoo. Tsis zoo li ib-theem extrusion tshuab, tandem extrusion tsim hais txog qhov kev sib tw tseem ceeb ntawm kev sib npaug siab dhau los nrog kev tswj cov shearing thiab kev tswj qhov kub thiab txias - ua rau nws tus qauv kub rau kev ua haujlwm siab lossis kev ua haujlwm siab zoo li PVC., XLPE, thiab tsis tshua muaj pa luam yeeb zero-halogen (LSZH) cov ntaub ntawv.
Cov Ob theem Tandem Extruder Factory sawv cev tshwj xeeb extrusion tov engineered rau precision compounding thiab shearing ntawm thermoplastics, qhov twg cov txheej txheem tswj thiab cov khoom siv ncaj ncees tsis tuaj yeem sib tham. Lub kaw lus ob-theem configuration faib cov txheej txheem extrusion ua ob qhov txawv, cov theem ntxiv, each optimized for a specific function—eliminating the trade-offs inherent in single-stage extruders.
The first stage twin extruder usually runs at the high speed for better compounding and higher throughput. This high-speed twin-screw section excels at intensive mixing, homogenization, and melting of raw materials, leveraging intermeshing screw geometry to ensure uniform distribution of additives, fillers, or reinforcements (e.g., iav fiber, flame retardants). The high rotational speed (mus txog 500 rpm for Zhuoyue models) maximizes compounding efficiency, processing even complex material formulations at scale.
The second stage must be a single screw extruder, with a large diameter and low speed operation. Cov ntsia hlau qis ceev tsis txhob hla dhau-shearing quab yuam-ib qho txiaj ntsig tseem ceeb rau cov ntaub ntawv kub-rhiab zoo li kev kho mob-qib mos PVC lossis XLPE cable sib txuas, qhov twg ntau shearing yuav degrade molecular qauv, compromise mechanical zog, los yog ua rau thermal degradation. Vim muaj peev xwm sib pauv cua sov, cov cua txias sab hauv tuaj yeem tiv thaiv kom tsis txhob muaj cua sov, tuav tswj qhov kub thiab txias nyob rau theem thib ob lub thoob kom ntseeg tau tias cov viscosity zoo ib yam thiab cov khoom zoo.
Cov Ob theem Tandem Extruder Chaw tsim tshuaj paus tso cai rau tus neeg teb xov tooj ua tau yooj yim dua, kwv yees kev sib xyaw ua ke thiab tswj qhov kub thiab txias. Los ntawm kev sib cais compounding (theem 1) thiab shaping / extrusion (theem 2), tus neeg teb xov tooj tuaj yeem kho tus kheej ntawm tus kheej (ceev, kub, pub tus nqi) rau txhua theem, tailoring tus txheej txheem rau qhov tshwj xeeb uas yuav tsum tau ntawm txhua yam khoom - los ntawm nruj PVC yeeb nkab tebchaw mus rau mos kho mob-qib PVC los yog LSZH cable cov ntaub ntawv.
Qhov siab ceev ntxaib-ntsia hlau thawj theem muab kev sib xyaw ua ke uas ib leeg-ntsia hlau extruders tsis tuaj yeem sib phim, kom ntseeg tau tias uniform dispersion ntawm additives (e.g., plasticizers, stabilizers, flame retardants) thiab cov khoom zoo ib yam batch-rau-batch. Kev xeem thib peb los ntawm Tuam Tshoj Plastic Machinery Industry Association (CPMIA) lees paub tias Zhuoyue ob theem extruders ua tiav 98% homogenization raug rau PVC tebchaw - 15% siab dua ib-theem lwm txoj kev.
Qhov qis-ceev ib leeg-ntsia hlau theem thib ob tshem tawm tshaj-shearing thiab overheating, tiv thaiv cov ntaub ntawv kub-rhiab los ntawm degradation. Piv txwv li, thaum ua cov ntaub ntawv kho mob mos PVC (siv hauv IV tubing lossis cov khoom siv phais), Lub kaw lus tswj qhov kub ntawm qhov sib txawv ntawm ± 1 ° C, xyuas kom ua raws li ISO 10993 biocompatibility qauv thiab zam cov khoom tsis muaj xim lossis brittleness.
Lub tandem tsim combines high compounding efficiency (theem 1) nrog ruaj khov extrusion (theem 2), xa 30-50% ntau dua throughput tshaj ib-theem ntxaib-ntsia hlau extruders ntawm sib npaug loj. Zhuoyue ZYT65-150 qauv tsim 300-500 kg/hr ntawm XLPE cable khoom-piv rau 200-300 kg / hr los ntawm ib-theem 65 hli ntxaib-ntsia hlau extruder-thaum tswj nruj zoo tswj cov hluav taws xob rwb thaiv tsev zog.
Qhov kev hloov pauv hloov pauv tau yooj yim thiab tsim dual-theem ua rau lub kaw lus sib xws nrog ntau hom thermoplastics, from commodity resins to high-performance engineering materials. This versatility eliminates the need for multiple dedicated extruders, reducing capital expenditure and factory floor space for manufacturers processing diverse material formulations.
Precise temperature and shearing control minimize material scrap (feem ntau <2% for Zhuoyue systems, compared to 5-8% for single-stage extruders) and reduce energy consumption by 18% per kg of finished compound. For high-volume production (e.g., cable material manufacturing), this translates to annual cost savings of $50,000-$150,000 for mid-sized facilities.
The two stage extruder is mainly used for the compounding of thermoplastic and shearing. double-stage structure are suitable for processing a variety of materials, with applications spanning high-precision and high-volume industries where material consistency is critical:
Zhuoyue ob theem extruder series (ZYT50-120 to ZYT95-200) is engineered to scale with production needs, from small-batch specialty compounding (ZYT50-120) to large-scale industrial manufacturing (ZYT95-200). All models maintain the core dual-stage design principles—high-speed compounding, low-speed extrusion, and precision cooling—with specifications tailored to throughput and material type:
| Qauv | Diameter (mm) | Max. Speed (rpm ua) | L/D | Motor (kW) | Output (kg/hr) |
|---|---|---|---|---|---|
| ZYT50-120 | 50.5/120 | 500/85 | 24-48 | 37-45 | 200-300 |
| ZYT65-150 | 62.4/150 | 500/85 | 24-48 | 75/45 | 300-500 |
| ZYT75-180 | 71/180 | 500/85 | 24-48 | 110/55 | 300-800 |
| ZYT95-200 | 93/200 | 300/85 | 24-48 | 220/110 | 500-1000 |
Key Specification Notes: The diameter values represent stage 1 (twin-screw) / theem 2 (single-screw) barrel diameters. Max speed values reflect stage 1 / theem 2 rotational speeds (rpm ua). The L/D ratio (24-48) is adjustable across barrel zones to optimize melting and cooling for different materials—shorter ratios (24) for high-throughput general plastics, longer ratios (48) for heat-sensitive specialty materials.
All Zhuoyue Lab Twin Ntsia Hlau Extruder ob theem extruders feature kaw-voj PID kub tswj nrog thaj tsam tshwj xeeb txias (dej / roj) rau ob theem. Qhov thib ob-theem chim muaj xws li ob-phab ntsa cua txias raws thiab thermal sensors spaced txhua txhua 100 hli., tswj ± 0.5 ° C qhov tseeb - qhov tseem ceeb rau kev ua LSZH thiab qib kev kho mob PVC. Cov qauv no tau lees paub los ntawm International Electrotechnical Commission (IEC) rau kev ua raws li kev lag luam kub tswj cov qauv (IEC 61131-2).
Theem 1 Twin screws yog tsim los ntawm nitrided alloy steel (38CrMoAlA) nrog lub hardness ntawm HRC 65, thaum theem 2 ib leeg ntsia hlau siv bimetallic txheej (Stellites 6) for abrasion resistance-extending component life to 8,000+ sijhawm ua haujlwm (2x ntev tshaj li tus qauv extruders). Barrels yog lined nrog hnav-resistant ceramics rau ua cov khoom ntim (e.g., calcium carbonate-filled PVC), reducing maintenance downtime by 60%.
Compliant with global safety and quality standards (CE, ISO 9001, UL 508A for electrical components, and FDA 21 CFR 177.1520 for food/medical contact applications), the extruders include emergency stop systems, interlocked safety guards, and thermal overload protection. For medical device manufacturers, Zhuoyue offers cleanroom-compatible configurations (Class 8 ISO 14644-1) to meet sterile production requirements.
The extruders feature a touchscreen HMI (human-machine interface) with pre-programmed material profiles (e.g., PVC, XLPE, LSZH) to simplify setup—reducing operator training time by 70%. Modular component design allows for quick screw/barrel replacement (≤3 hours) and on-site maintenance, minimizing production interruptions. Remote monitoring and diagnostic capabilities enable real-time technical support from Zhuoyue’s global service centers (Teb chaws USA, EU, Southeast Asia).
A leading European cable manufacturer (based in Germany) replaced three single-stage extruders with two Zhuoyue ZYT65-150 two stage extruders in 2024 to scale production of XLPE medium-voltage cable compounds. The results demonstrate the tangible benefits of the tandem design:
Cov chaw tsim khoom tau tshaj tawm tias ZYT65-150 lub peev xwm los ua XLPE nrog cov neeg sawv cev sib txuas sib txuas sib txuas txo qis cable tsis ua haujlwm los ntawm 90% hauv kev sim teb, txhim kho lawv lub koob npe nrov ua lag luam rau cov khoom siv hluav taws xob zoo.
Txhawm rau qhia txog tus nqi tshwj xeeb ntawm tandem extrusion tshuab, Hauv qab no yog ib sab sib piv nrog ib-theem ntxaib-ntsia hlau thiab ib leeg-ntsia hlau extruders rau kev ntsuas qhov tseem ceeb:
| Performance Metric | Ob theem Extruder (Zhuoyue) | Ib-theem Twin-Screw Extruder | Ib-theem Ib-Screw Extruder |
|---|---|---|---|
| Homogenization raug | 98% | 83% | 75% |
| Max Kev Tshaj Tawm (kg / h rau 65mm puag) | 500 | 300 | 130 |
| Kev siv hluav taws xob (kWh/kg) | 0.62 | 0.78 | 0.95 |
| Haum rau cov khoom siv thaum tshav kub kub | Zoo heev (tswj shearing / txias) | Ncaj ncees (pheej hmoo ntawm overheating) | pluag (txwv kev sib xyaw / cua sov tswj) |
| Kev tu ncua sij hawm (teev/xyoo) | 40 | 85 | 60 |
Tom qab 18 xyoo ntawm engineering thiab refining tandem extrusion tshuab, Zhuoyue ob theem extruders sawv tawm rau lawv lub peev xwm los xa cov khoom lag luam siab, kev tswj xyuas meej, thiab kev tswj kev ua raws cai-tseem ceeb rau cov tuam txhab lag luam hauv kev tswj hwm kev lag luam (kho mob, tsheb, cable). Tsis zoo li generic ob theem extruders, Zhuoyue's systems tau txhawb nqa los ntawm:
Whether you’re compounding medical-grade PVC, XLPE cable materials, or LSZH compounds, Zhuoyue’s two stage extruders ensure consistent quality, cost efficiency, and scalability—helping you meet growing market demand while adhering to strict industry standards.
A: Yog lawm. Zhuoyue offers FDA-compliant configurations with food-grade lubricants, polished barrels/screws (Ra ≤ 0.8μm), and clean-in-place (CIP) systems to meet FDA 21 CFR 177.1520 requirements for food-contact plastics (e.g., PE/PP compounds for packaging).
A: Standard ZYT95-200 models have a lead time of 10-12 lub lis piam. Kev cai configurations (e.g., cleanroom compatibility, special screw profiles for LSZH) xav tau 14-16 lub lis piam. Kev tsim tawm sai (8-lub sij hawm coj mus kuaj) is available for an additional 15% of the unit cost.
A: For general plastic compounding (e.g., rigid PVC), screws/barrels last 8,000+ sijhawm ua haujlwm (≈1 year for 24/7 production). For highly abrasive materials (e.g., 50% calcium carbonate-filled PVC), replacement is needed every 4,000-6,000 teev. Zhuoyue offers predictive maintenance software to monitor wear and schedule replacements proactively.
A: Yog lawm. The high-speed first stage effectively mixes and melts post-consumer/post-industrial recycled plastics (e.g., recycled XLPE cable scrap) with virgin resins, while the low-speed second stage prevents over-shearing of degraded polymer chains. Zhuoyue can customize screw profiles to optimize processing of recycled materials with high impurity levels.
A: Zhuoyue’s training program includes 2 days of on-site hands-on training (per operator) npog: parameter setup for different materials, routine maintenance (lubrication, filter changes), troubleshooting common issues (e.g., temperature fluctuations, material bridging), and quality control testing. We also provide a comprehensive operator manual (English/Spanish/German/French) and access to on-demand video tutorials.
As a trusted partner to global manufacturers for nearly two decades, Zhuoyue’s two stage extruders are designed to deliver not just equipment, but a complete compounding solution that aligns with your quality, efficiency, and compliance goals. Contact our technical team to discuss your specific material processing needs and request a free feasibility analysis for your production line.
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